fix: ensure EV charge rates settings available

Allow charge rates for electric vehicle to be provided by the POST
optimize endpoint. Create a default value in case neither the
parameters nor the configuration provide charge rates.

This is also to allow to migrate from 0.1.0 configuration format
to actual one.

Signed-off-by: Bobby Noelte <b0661n0e17e@gmail.com>

src/akkudoktoreos/optimization/genetic/geneticdevices.py

@@ -90,6 +90,11 @@ class ElectricVehicleParameters(BaseBatteryParameters):
     initial_soc_percentage: int = initial_soc_percentage_field(
         "An integer representing the current state of charge (SOC) of the battery in percentage."
     )
+    charge_rates: Optional[list[float]] = Field(
+        default=None,
+        description="Charge rates as factor of maximum charging power [0.00 ... 1.00]. None denotes all charge rates are available.",
+        examples=[[0.0, 0.25, 0.5, 0.75, 1.0], None],
+    )
 
 
 class HomeApplianceParameters(DeviceParameters):